Minkowski tensor in electrodynamics of moving media and three rules for construction of the physical tensors in Einstein's special relativity
arXiv:2003.05275 · doi:10.1016/j.ijleo.2020.165469
Abstract
Minkowski applied Einstein's principle of relativity to moving media and developed electrodynamics of moving media. Like Einstein introduced the EM field-strength tensor for electric field and magnetic induction , Minkowski introduced another EM field-strength tensor for the electric displacement and magnetic field ; thus leading to Minkowski tensor. Recently, Partanen and Tulkki criticize that Minkowski tensor contradicts special relativity, and proposed a mass-polariton stress-energy-momentum (MP SEM) tensor to replace Minkowski tensor. In this paper, based on a careful analysis of previous literature on this topic, (i) I reasonably argue that Minkowski tensor is a covariant combination of two EM field-strength tensors, and thus all the physical results obtained from Minkowski tensor are already embodied in the two EM field-strength tensors; (ii) I propose three rules for covariantly and self-consistently constructing the physical tensors in Einstein's special relativity, with Minkowski tensor following all the rules while both Abraham tensor and the MP SEM tensor not. Finally, by enumerating a specific example I show that the Lorentz covariance of a tensor provides no guarantee of the consistency of the tensor with the principle of relativity.
Ref. [13] was added to give the definition of a moving volume. 8 pages, no figures